COOLING DEVICE FOR AUTOMATIC VENDING MACHINE

Japanese Patent JP3672720

B2

PROBLEM TO BE SOLVED: To improve the abrasion resistance of a compressor sliding part, and the reliability of a cooling device by preventing a coolant liquid from being sucked by the compressor in the coolant circuit of an automatic vending machine equipped with plural merchandise housing chambers in which cool temperature and hot temperature modes can be stitched.
SOLUTION: At the time of selling the hot merchandise of merchandise housing chambers 21B and 21C in a heating mode under a low outside air temperature, the number of sales is counted by a merchandise sales number counting means 28, and when the number of sales is less than a prescribed number, the opening degree of each electric expansion valve 23B and 23C is made large so that much coolant can flow to coolers 22B and 22C of the merchandise housing chambers 21B and 21C, and when the number of sales is not less than the prescribed number, the opening degree is made small so that the coolant liquid can be heated and evaporated by using high temperature air in the merchandise housing chambers 21B and 21C. Therefore, it is possible to prevent the coolant liquid from being returned to a compressor 4. Thus, the abrasion resistance of the compressor 4 sliding part can be improved, and the reliability of a cooling device can be ensured.

JP4858105	vending machine
JP4652735	Seismic isolation device

Ryuzo Fujimoto
Takahiro Inoue
Kenjiro Tomaru

JP1527998A

July 20, 2005

January 28, 1998

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Matsushita Cold Machinery Co., Ltd.

G07F9/10; F25D11/00; (IPC1-7): G07F9/10; F25D11/00

JP8287344A
JP8249533A
JP8193774A
JP8189741A

Fumio Iwahashi
Tomoyasu Sakaguchi
Hiroki Naito

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